<template>
  <div>
    <el-upload
      class="avatar-uploader"
      action="#"
      :show-file-list="false"
      :on-success="handleAvatarSuccess"
      :before-upload="beforeAvatarUpload"
      :http-request="httpEequestFn"
    >
      <img v-if="imageUrl" :src="imageUrl" class="avatar">
      <i v-else class="el-icon-plus avatar-uploader-icon" />
    </el-upload>
  </div>
</template>

<script>
// 导入 cos 模块
const COS = require('cos-js-sdk-v5')
var cos = new COS({
  SecretId: 'AKIDFJ8gxyrUqvkIZZJmytYw2rQikVzEDuLX',
  SecretKey: 'yf5E6h13pKYVCcldEZdRxCArHQIuFJ6c'
})
export default {
  name: 'UploadImg',
  data() {
    return {
      imageUrl: ''
    }
  },
  methods: {
    // 往后台上传成功后的回调函数
    handleAvatarSuccess(res, file) {
      this.imageUrl = URL.createObjectURL(file.raw)
    },
    beforeAvatarUpload(file) {
      const isJPG = ['image/jpeg', 'image/png', 'image/jpg', 'image/gif'].includes(file.type)
      const isLt2M = file.size / 1024 / 1024 < 2

      if (!isJPG) {
        this.$message.error('上传头像图片只能是 JPG 格式!')
      }
      if (!isLt2M) {
        this.$message.error('上传头像图片大小不能超过 2MB!')
      }
      return isJPG && isLt2M
    },
    // 自定义图片上传过程
    httpEequestFn(res) {
      // res.file 拿到File类型的文件对象
      this.imageUrl = URL.createObjectURL(res.file)
      console.log(res)
      // if (res.file) {
      cos.putObject({
        Bucket: '142class-1309369862', // 存储桶的名称，必须
        Region: 'ap-nanjing', // 存储桶所在地域，必须字段
        Key: res.file.name, // 文件名，必须
        StorageClass: 'STANDARD', // 上传模式, 标准模式
        Body: res.file, // 上传文件对象
        // 上传进度条
        onProgress: function(progressData) {
          console.log(JSON.stringify(progressData))
        }
      }, (err, data) => {
        if (err === null && data.statusCode === 200) {
          this.imageUrl = `https:${data.Location}`
        }
      })
      // }
    }

  }
}
</script>

<style>
  .avatar-uploader .el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }
  .avatar-uploader .el-upload:hover {
    border-color: #409EFF;
  }
  .avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 160px;
    height: 160px;
    line-height: 178px;
    text-align: center;
  }
  .avatar {
    width: 178px;
    height: 178px;
    display: block;
  }
</style>
